Proposed Developmental Drilling of 66 wells in 7ML/NELP Blocks in Cuddalore, Nagapattinam, Thiruvarur and Thanjavur District of Tamil Nadu
Following information is submitted with respect to above project: i) Detailed development plan ii) The presence of forest and Eco sensitive areas iii) Justification on exemption of Public Hearing
The point wise replies are given below:
1. Detailed Development Plan.
Initially ONGC has proposed Development Drilling of 66 wells in 7 ML/NELP blocks i.e. Bhuvanagiri, Madanam, Pallivaramangalam, Vijayapuram, Periyakudi, Thulasiapattinam and Pundi which are located in Cuddalore, Nagapattinam, Tiruvarur and Thanjavur districts of Tamil Nadu. The estimated cost of the proposed project is 264 INR crores. The Public Hearing for the Nagapattinam, Tiruvarur and Tanjavur districts has been conducted on 20.06.2014, 27.06.2014 and 10.07.2014 respectively. The Public Hearing in Cuddalore District is yet to be conducted (awaiting for District Collector’s permission) but in present flood conditions, it cannot be conducted in near future. Hence Environment Clearance may be considered only for 46 wells only against 66 wells leaving the wells in Cuddalore district. For Cuddalore district wells separate proposal will be submitted.
The details of the proposed drilling activity with respect to numbers of wells in each block and the production expected are given in the table below:
S. District Field/ Area Expected Planned Oil& Gas Produced potential locations handling facility water No. for each available handling well (m3/d) facility
1. Nagapattinam Madanam 20 (Oil) 10 GGS-Madanam* ETP NRM
3. Tiruvarur 20 (Oil) 10 EPS-
Pallivaramangalam Adiayakamangala ETP- m Kamalapur
4. Tiruvarur Vijayapuram 20 (Oil) 5 EPS-Kamalapurm am
5. Tiruvarur Periyakudi 50,000 (Gas) 10 GCS-Kovilkalapal
6. Nagapattinam 15 (Oil) 3 EPS- Tulsiapattinam Thulasiapattinam
7. Tanjavur Pundi 20 (Oil) 8 EPS-Pundi
The Facility available for handling the produced hydrocarbon mixture was also listed in the table. These Production installations like GGS, GCS, EPS and ETP are in close proximity to most of the proposed drilling locations i.e. within a radius of 5 Km range. Effluent generated will be treated at ETP NRM (1300 m3 capacity) and ETP KMP (500 m3 capacity). The total capacity of both the ETPs is 1800 m3/day. The quantity present effluent generation is only 720 m3/ day (avg.) and the expected production due to above mentioned drilling activity will be maximum 500 m3/day. Thus the total maximum effluent generated will be 1220m3/day which is well within the total capacity of the ETPs (1800 M3/day).
2. Presence of Forest Land/ Eco-sensitive area:
EC proposed locations are around one to two kilometres from the existing wells, there is no forest land/eco sensitive are involved while laying the connecting pipelines to the GGS/GCS/EPS.
3. Request for Exemption from Public Hearing under clause 7(ii) under EIA Notification, 2006 – justification from Project Proponent:
ONGC has conducted Public Hearing on 20.06.2014, 27.06.2014 and 10.07.2014 dates in Nagapattinam, Tiruvarur and Tanjavur Districts respectively. These are the same Blocks and Districts where the drilling of these 46 wells is proposed. The further details are provided in the table below and the same has been superimposed in the maps enclosed.
Recently Public Sl Proposed Drilled District Proposed Fields Previous ML Area hearing No. Locations Nearby Date Field/Well 1 Madanam 10 Madanam MD-6 Nagapattinam 20.06.2014 2 Tulsapattinam 3 Tulasapattinam TA-5 3 Pallivaramangalam 10 Tiruvarur Adiyakkamangalam 4 Tiruvarur Vijayapuram 5 27.06.2014 Tiruvarur 5 Periyakudi 10 PEL-II PD-3 6 Tanjavur Pundi 8 Pundi 10.07.2014 PU-6
From the view of the above information it is requested to kindly consider the proposed project for exemption from Public Hearing under the section 7 (ii) of Environment Impact Assessment Notification, 2006.